chore: restructure skills repo with new agents and skill bundles

- Add new skills: deep-dive, docs-rag, meta-creator, ppt-maker, sdlc
- Add agent configs: g-assistent, meta-creator, sdlc with prompt files
- Add reference docs for custom agents and skills specification
- Add utility scripts: install-agents.sh, orchestrate.py, puml2svg.sh
- Update README and commit-message skill config
- Remove deprecated skills: codereview, python, testing, typescript
- Add .gitignore

skills/ppt-maker/scripts/package.json

@@ -0,0 +1,15 @@
+{
+  "name": "ppt-maker",
+  "version": "1.0.0",
+  "description": "Generate PPT slides automatically from user input",
+  "main": "ppt-maker.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": ["ppt", "pptx", "slides", "presentation", "ai", "generator", "automatic"],
+  "author": "北灵聊AI",
+  "license": "MIT",
+  "dependencies": {
+    "pptxgenjs": "^4.0.1"
+  }
+}